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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#if !defined(__COGL_XLIB_H_INSIDE__) && !defined(COGL_COMPILATION)
#error "Only <cogl/cogl-xlib.h> can be included directly."
#endif
#ifndef __COGL_XLIB_RENDERER_H__
#define __COGL_XLIB_RENDERER_H__
#include <X11/Xlib.h>
/* NB: this is a top-level header that can be included directly but we
* want to be careful not to define __COGL_H_INSIDE__ when this is
* included internally while building Cogl itself since
* __COGL_H_INSIDE__ is used in headers to guard public vs private api
* definitions
*/
#ifndef COGL_COMPILATION
#define __COGL_H_INSIDE__
#endif
#include <cogl/cogl-renderer.h>
COGL_BEGIN_DECLS
/*
* cogl_xlib_renderer_handle_event:
* @renderer: a #CoglRenderer
* @event: pointer to an XEvent structure
*
* This function processes a single event; it can be used to hook into
* external event retrieval (for example that done by Clutter or
* GDK).
*
* Return value: #CoglFilterReturn. %COGL_FILTER_REMOVE indicates that
* Cogl has internally handled the event and the caller should do no
* further processing. %COGL_FILTER_CONTINUE indicates that Cogl is
* either not interested in the event, or has used the event to update
* internal state without taking any exclusive action.
*/
CoglFilterReturn
cogl_xlib_renderer_handle_event (CoglRenderer *renderer,
XEvent *event);
/*
* CoglXlibFilterFunc:
* @event: pointer to an XEvent structure
* @data: the data that was given when the filter was added
*
* A callback function that can be registered with
* cogl_xlib_renderer_add_filter(). The function should return
* %COGL_FILTER_REMOVE if it wants to prevent further processing or
* %COGL_FILTER_CONTINUE otherwise.
*/
typedef CoglFilterReturn (* CoglXlibFilterFunc) (XEvent *event,
void *data);
/*
* cogl_xlib_renderer_add_filter:
* @renderer: a #CoglRenderer
* @func: the callback function
* @data: user data passed to @func when called
*
* Adds a callback function that will receive all native events. The
* function can stop further processing of the event by return
* %COGL_FILTER_REMOVE.
*/
void
cogl_xlib_renderer_add_filter (CoglRenderer *renderer,
CoglXlibFilterFunc func,
void *data);
/*
* cogl_xlib_renderer_remove_filter:
* @renderer: a #CoglRenderer
* @func: the callback function
* @data: user data given when the callback was installed
*
* Removes a callback that was previously added with
* cogl_xlib_renderer_add_filter().
*/
void
cogl_xlib_renderer_remove_filter (CoglRenderer *renderer,
CoglXlibFilterFunc func,
void *data);
/*
* cogl_xlib_renderer_get_foreign_display:
* @renderer: a #CoglRenderer
*
* Return value: the foreign Xlib display that will be used by any Xlib based
* winsys backend. The display needs to be set with
* cogl_xlib_renderer_set_foreign_display() before this function is called.
*/
Display *
cogl_xlib_renderer_get_foreign_display (CoglRenderer *renderer);
/*
* cogl_xlib_renderer_set_foreign_display:
* @renderer: a #CoglRenderer
*
* Sets a foreign Xlib display that Cogl will use for and Xlib based winsys
* backend.
*
* Note that calling this function will automatically call
* cogl_xlib_renderer_set_event_retrieval_enabled() to disable Cogl's
* event retrieval. Cogl still needs to see all of the X events so the
* application should also use cogl_xlib_renderer_handle_event() if it
* uses this function.
*/
void
cogl_xlib_renderer_set_foreign_display (CoglRenderer *renderer,
Display *display);
/**
* cogl_xlib_renderer_set_event_retrieval_enabled:
* @renderer: a #CoglRenderer
* @enable: The new value
*
* Sets whether Cogl should automatically retrieve events from the X
* display. This defaults to %TRUE unless
* cogl_xlib_renderer_set_foreign_display() is called. It can be set
* to %FALSE if the application wants to handle its own event
* retrieval. Note that Cogl still needs to see all of the X events to
* function properly so the application should call
* cogl_xlib_renderer_handle_event() for each event if it disables
* automatic event retrieval.
*
* Since: 1.10
* Stability: unstable
*/
void
cogl_xlib_renderer_set_event_retrieval_enabled (CoglRenderer *renderer,
CoglBool enable);
Display *
cogl_xlib_renderer_get_display (CoglRenderer *renderer);
COGL_END_DECLS
#endif /* __COGL_XLIB_RENDERER_H__ */
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